A Direct Examination of the Nonlinear (Quadratic) Association between Intelligence and Suggestibility in Children
A Direct Examination of the Nonlinear (Quadratic) Association between Intelligence and Suggestibility in Children
复制标题
儿童智力与暗示性之间非线性（二次）关联的直接检验
DOI：
10.1002/acp.1213
复制
发表时间：
2006
影响因子：
2.4
通讯作者：
Martine B. Powell
中科院分区：
文献类型：
--
作者：
Gilles E. Gignac;Martine B. Powell
为了检验这一假设，即在不同的智商水平上，智力和消化能力可能有差异地相互关联，研究往往将样本分为低智商组和高智商组。然而，人为地对一个自然连续变量（如智商）进行二分法的做法受到了几位统计专家的严厉批评。因此，在这项研究中，智力和消化能力之间的关联可能与智商水平相互作用的可能性是通过对儿童样本（n 1/4 158）的智商分数进行二次变换来直接检验的。结果表明，智力和消化能力之间存在二次非线性关联，当智商水平达到105左右时，智商和消化能力之间的线性关联不再存在。结果进行了讨论，在不二分法自然连续得分的变量的优点。此外，与其他几位研究者相反，我们认为，在正常智商范围的一定水平内，智力和可接受性确实相互关联。版权所有# 2006年约翰威利父子有限公司。
SUMMARY In order to test the hypothesis that intelligence and suggestibility may correlate with each other differentially at different levels of IQ, research has tended to dichotomize samples into low and high IQ groups. However, the practice of artificially dichotomizing a naturally continuous variable (such as IQ) has been sternly criticized by several statistical experts. Thus, in this investigation, the possibility that the association between intelligence and suggestibility may interact with IQ level was tested directly with a quadratic transformation of the IQ scores in a sample of children (n ¼ 158). The results demonstrated that a quadratic nonlinear association existed between intelligence and suggestibility, such that the linear association between IQ and suggestibility ceased to exist at an IQ level of approximately 105. The results are discussed in light of the advantages of not dichotomizing naturally continuously scored variables. Further, in contrast to several other investigators, we argue that intelligence and suggestibility do correlate with each other within a certain level of the normal IQ range. Copyright # 2006 John Wiley & Sons, Ltd.